For some reason, whenever you cheat mand use the Alien Cruser, you can't kill or even find the REAL Cruser for the Rebels or the Dirty Confeds. Mayby I am doing the mission wrong, but I have beat it before and I distenctly remember this being the way.
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Peace(Through Superior Firepower)
mMm
"All American boy with great dreams of glamor life...Bright lights and boogie nights, the hype...all of this could be yours if The Price Is Right...Grab your nothin' and hold it tight..."